| Verb | 1. | dull - make dull in appearance; "Age had dulled the surface"alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue" | |
| 2. | dull - become dull or lusterless in appearance; lose shine or brightness; "the varnished table top dulled with time"change - undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night" | |
| 3. | dull - deaden (a sound or noise), especially by wrappingsoften - make (images or sounds) soft or softer | |
| 4. | dull - make numb or insensitive; "The shock numbed her senses"desensitise, desensitize - cause not to be sensitive; "The war desensitized many soldiers"; "The photographic plate was desensitized" | |
| 5. | dull - make dull or blunt; "Too much cutting dulls the knife's edge"alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue" sharpen - make sharp or sharper; "sharpen the knives" | |
| 6. | dull - become less interesting or attractivechange - undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night" | |
| 7. | dull - make less lively or vigorous; "Middle age dulled her appetite for travel"weaken - become weaker; "The prisoner's resistance weakened after seven days" cloud - make milky or dull; "The chemical clouded the liquid to which it was added" | |
| Adj. | 1. | dull - lacking in liveliness or animation; "he was so dull at parties"; "a dull political campaign"; "a large dull impassive man"; "dull days with nothing to do"; "how dull and dreary the world is"; "fell back into one of her dull moods"colorless, colourless - lacking in variety and interest; "a colorless and unimaginative person"; "a colorless description of the parade" spiritless - lacking ardor or vigor or energy; "a spiritless reply to criticism" lively - full of life and energy; "a lively discussion"; "lively and attractive parents"; "a lively party" | |
| 2. | dull - emitting or reflecting very little light; "a dull glow"; "dull silver badly in need of a polish"; "a dull sky"unpolished - not carefully reworked or perfected or made smooth by polishing; "dull unpolished shoes" bright - emitting or reflecting light readily or in large amounts; "the sun was bright and hot"; "a bright sunlit room" | |
| 3. | dull - being or made softer or less loud or clear; "the dull boom of distant breaking waves"; "muffled drums"; "the muffled noises of the street"; "muted trumpets"soft - of sound; relatively low in volume; "soft voices"; "soft music" | |
| 4. | dull - so lacking in interest as to cause mental weariness; "a boring evening with uninteresting people"; "the deadening effect of some routine tasks"; "a dull play"; "his competent but dull performance"; "a ho-hum speaker who couldn't capture their attention"; "what an irksome task the writing of long letters is"- Edmund Burke; "tedious days on the train"; "the tiresome chirping of a cricket"- Mark Twain; "other people's dreams are dreadfully wearisome"uninteresting - arousing no interest or attention or curiosity or excitement; "a very uninteresting account of her trip" | |
| 5. | dull - (of color) very low in saturation; highly diluted; "dull greens and blues"unsaturated - (of color) not chromatically pure; diluted; "an unsaturated red" | |
| 6. | dull - not keenly felt; "a dull throbbing"; "dull pain"sharp - keenly and painfully felt; as if caused by a sharp edge or point; "a sharp pain"; "sharp winds" | |
| 7. | dull - slow to learn or understand; lacking intellectual acuity; "so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students"stupid - lacking or marked by lack of intellectual acuity | |
| 8. | dull - (of business) not active or brisk; "business is dull (or slow)"; "a sluggish market"inactive - lacking activity; lying idle or unused; "an inactive mine"; "inactive accounts"; "inactive machinery" | |
| 9. | dull - not having a sharp edge or point; "the knife was too dull to be of any use"sharp - having or made by a thin edge or sharp point; suitable for cutting or piercing; "a sharp knife"; "a pencil with a sharp point" | |
| 10. | dull - blunted in responsiveness or sensibility; "a dull gaze"; "so exhausted she was dull to what went on about her"- Willa Catherinsensitive - deficient in human sensibility; not mentally or morally sensitive; "insensitive to the needs of the patients" | |
| 11. | dull - not clear and resonant; sounding as if striking with or against something relatively soft; "the dull thud"; "thudding bullets" | |
| 12. | dull - darkened with overcast; "a dark day"; "a dull sky"; "a gray rainy afternoon"; "gray clouds"; "the sky was leaden and thick"cloudy - full of or covered with clouds; "cloudy skies" | |